Process of operating gas-producers.



No. 313,628. PATZENTED FEB.

' B.E.BLDRED.

PROCESS OF OPERATING GAS PRODUCERS.

APPLICATION FILED AUG.10, 1905.

INVENTOR Y s QMAQM ATTORNEY I UNITED STA E PATENT orrron.

BYRON E. ELDRED, or BRONXVILLE, NEW YORK, ASSIGNOR TO COMBUS- TION UTILITIES COMPANY, OF NEW NEYV' YORK.

YORK. N. Y., A CORPORATIQN; OF

PROCESS or OPERATING GAS-PRODUCERS.

No. 813.628. Specification of Apnlication filed August 10.

'i) all? who/rt 12/. may concern; Be it known that i, BYRON E. ELDRED, a citizen of the United States, and a resident of Bronxville, in the county of Viestchester and State of New York, have invented cerl tain new and useful Improvements in Proc- 3 esses of Gperating Gas-Producers, of which the following is a specification.

This invention relates to process for the 1 regulation and control of the temperature of combustion in the (production of fuel or proper ap lication to the power as by the pro ucer process. I It rtfiates particularly to process for the utilization of endoth'ermically-reacting fixed l gases for the chemical or endothermic rel tardation of combustion, whereby the gasproducing'fuel mass is cooled to or maintained at a temperature most effective for the gasificationof the particular fuel em ploye'd. Especially useful for suchendothen mic cool of a fuelbed is the fixed gas carbon diox iii derived convenientl from waste '.productsof combustion and rom various calcining operations, such as lime or cement burning, glass manufacture, and the like.- Its fuel-bed to comlately uti 'ze all of its endothermic virtues as, however, up to the present time been a problcnndiflicult of solution. The varying I nature of products of combustion must needs I call for a method'of utilisation. of reat fiexibility or latitude of operation. I

egulation 5 and control of thegasifying-iire is the sine I Qua non of successful producer practice. No I two furnaces or kilns yield products of coml bustion of like con'iposition. 'lhe stack-gases from an open-hearth steel funnace may, for 1 example, contain six per cent: of carbon dil oxid, from a regenerative gas-bench possibly eighteen per cent. of carbon dioxid, and from a limekiln often thirty -1ivc per cent of carbon dioxid, whence it is evident that process capable of using the waste from all of thesedurnaces must be conformable within 1 l the fuel-hopper 2, the gas-outlet 3, the water wide limits.

Prior methods of using stack-gases in pro d'uccr operation usually have involved as a part of the apparatus used for the purpose 5 either a pump, fan-blower, or positive presi sure-blower and the li e, oi'nplo 'ing a mix tureoistaclcgas and-air, or eise they have involved an air or steam jet. W ith processes l carried out with such apparatus as are enul not be realized.

Letters Patent.

plosions have been known to occur, owing to the backflow of the produceras into the blast-mains when the impelling iorce ceases, thereb giving. rise to explosive mixtures which are subsequentlyignited byan entraining Home from theproducer-fire. .The steam-jet labors under the disadvantage, so far as I am advised, of condensation diificulties which seriously impair its theoretical or alleged efiicienc The air-jet is unsuited for use with weak urnace-gases-that is, gases weak in carbon dioxid-because the quantity of air re uired for creatin the necessary inductive iorce results in the dilution of the stack-gas and the introduction of so lar e a pro ortio'n of oxy on that the proper coo ing of t e. fire to an eiiiactive gasifying point can- My process involves the use of a jet of the products of combustion themselves, thereby securing with stack-gases of all compositions a regulation or control of roducer temperature manifest] impossib e by the abovementioned methods My process consists in the injection of carbon dioxid or products of combustion into the producer draft-passage in the form of an inductionet, whereby a suctipn or inductive action in the direction of the fuel mass of the producer is created, and thereby additional roducts of combustion or air, or both, eit ref cool or heated, are drawn into and form a part of the producerdraft. The carbon dioxid or products of combustion employed for the jet are referably'cooledand purified before use. (Ein'bon dioxid introduced by inductive action need not be so purified, although it may be cooled whenever proper regulation of the producerfire demands draft-gases of low sensible heat.

in the accompanying diagrammatic drawing is shown a view in elevation of apparatus adapted to carry out my process.

In the drawing, 1 is a gas-producer having seal 4, and the injector 5.

6 is a furnace from which by the conduit 7 products of combustion are passed into the purifier 8.

At 9 is showna com ressor connected on the inlet side to the purifier 8 b the pipe 10. In this pipe is situated an air-in et 20, whereby a regulated amount of air may be drawn merated in the former. category serious exis it valve to control the llow of gas.

l ronrthc lurtmce-staclt another stack gasdioxid.

passage 16 extends to the injector This passage is also supplied with :m air-inlet l7. l) a.mpcrs l8 and It) regulate the How ol strickgas and air, respectively.

My method of operation is as follows: A bed of ignited coal or other fuel s built up in the producer 1, and a blast. containing carbon dioxid is introducei'l through the injector 5 by ope-rating the compressor, whereby stitch-gases are withdrawn from the l'nrnnce through 7, are scrubbed or pnriiied in 8, and are forced into the blower at H. The induction created by the so-l'ormed jet. serves to draw products ol" combustion and air, if necessury, through the passage 16. By varying the proportion of oxygen to carbon dioxid a mixture is soon formed which will 'nmintnin the producer at an ell'ective gasilying-point. It will be seen from the foregoing that my process permits ol' the ii'io'ependent reguh1- tion of each producer; that it :LVOidS the use of hirge pitssuges or conduits for handling and injecting the. producer-drzil't, thereby reducing the danger from explosions to a minimum; that it avoids the use of steamer other iion-pcrinanent as on impelling medium, and therefore incurs all the economics to be expected from the use of a, non-condensing gas; that it allows of the purification and cooling without mndensntion losses of the endothiu'mic constituent used as a )rop elling means, and that'it permits of tlie'use'ol stuck-gas alone without; additions of air when aforesaid stack-gas is very weak in carbon The dillicultics, t-herel m'e, which have harassed other im'estigittors in, this promising lield have been eliminated by my process, and all those benefits and economies theoretically possible in the use of carbon dioxid become now practically possible through my controllable method forlts utilization.

What I. claim isl The process of operating a gas-producer which consists in inducing and controlling :1 d mt t-curren t of commingled air and products of combustion into said gusrt'iducer by means ol an inductive jet of prot ucts of combustion. 4 1

p 2. The process of operating a gas-producer which consists in inducing and controlling a draft-current. containing regulated proportions of air and of products of combustion by means ol a jet. of air and products of combustion, and introducing said jet and entrained gaseous mixture into the producer.

3. I The process of operating 8 gas-prmlucer which consists in feeding into the some a high-pressure jet of cor-mil .igled air and prodnets of combustion tlu ugh an unsealed pussagc-way containing a similar mixture whereby the feed will be responsive to the pressure in the producer.

4. The process of operating a gas-producer which consists in cooling, purifying and compressing products of combustion, formin the compressed gas into an inductive jet an impelling therewith an additional ortion of products of combustion intoa pr ucer.

5. The process of operating a' gas-producer which consists in employin' an inductive jet of cooled and purified pro nets of combustion to impel another ortion of products of combustion into a re ucer.

Signed at New 1 ork, in the county of New York and State of N ow York, this' tth day of August, A. D. 1905. l

- BYRON E. ELDRED. Witnesses:

CAuLE'roN ELLIS, JAS. K. CLARK. 

